EP 1340559 A2 20030903 - Knockout punch with pilot hole locator
Title (en)
Knockout punch with pilot hole locator
Title (de)
Stanzvorrichtung mit Lochpositionsbestimmung
Title (fr)
Dispositif de poinçonnage avec localisateur de trou
Publication
Application
Priority
US 8573002 A 20020228
Abstract (en)
A knockout punch (100) is provided with a member (161) such that when the punch and the die are drawn together by the draw stud to make a hole in a workpiece, the member on the punch will locate the punch assembly in a pilot hole. In three embodiments, the member is formed integrally with the punch and extends from the punch proximate to a bore (106) in the punch which is used to connect the punch to the draw stud. In another embodiment, the member is provided as an insert (840) which is connected to the punch within a counterbore. The punch is also provided with a pair of piercing portions (179) for piercing through the workpiece after the member has centered the punch assembly with the pilot hole and a pair of cutting portions (110,112) for shearing the workpiece after the piercing portions have pierced the workpiece. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 28/34 (2006.01); B26F 1/14 (2006.01)
CPC (source: EP US)
B21D 28/34 (2013.01 - EP US); B26F 1/14 (2013.01 - EP US); Y10T 83/9425 (2015.04 - EP US); Y10T 83/9428 (2015.04 - EP US); Y10T 83/9435 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
EP 1340559 A2 20030903; EP 1340559 A3 20050601; EP 1340559 B1 20061004; AT E341408 T1 20061015; CN 1277665 C 20061004; CN 1440860 A 20030910; DE 60215113 D1 20061116; DE 60215113 T2 20070111; ES 2272635 T3 20070501; HK 1055704 A1 20040121; JP 2003251420 A 20030909; JP 3713487 B2 20051109; TW 200303258 A 20030901; TW I246453 B 20060101; US 2003159561 A1 20030828; US 2006016312 A1 20060126; US 6973729 B2 20051213; US 7587830 B2 20090915
DOCDB simple family (application)
EP 02080176 A 20021210; AT 02080176 T 20021210; CN 02159378 A 20021226; DE 60215113 T 20021210; ES 02080176 T 20021210; HK 03108012 A 20031106; JP 2003004071 A 20030110; TW 91134841 A 20021129; US 10329605 A 20050411; US 8573002 A 20020228